Riak 1.3 YCSB Read Time Out

Nika Abramova ni4ca at hotmail.com
Fri Jul 12 16:39:26 EDT 2013


Hello,I have got logs and error. So what I got from log was (part of it since it goes all same):2013-07-12 06:33:35.674 [error] <0.1048.0> gen_server <0.1048.0> terminated with reason: no match of right hand value {error,{db_write,"IO error: ./data/anti_entropy/639406966332270026714112114313373821099470487552/000003.log: Cannot allocate memory"}} in hashtree:flush_buffer/1 line 3022013-07-12 06:33:35.683 [error] <0.1048.0> CRASH REPORT Process <0.1048.0> with 0 neighbours exited with reason: no match of right hand value {error,{db_write,"IO error: ./data/anti_entropy/639406966332270026714112114313373821099470487552/000003.log: Cannot allocate memory"}} in hashtree:flush_buffer/1 line 302 in gen_server:terminate/6 line 7472013-07-12 06:33:35.688 [error] <0.28642.0> CRASH REPORT Process <0.28642.0> with 0 neighbours exited with reason: no match of right hand value {error,{db_open,"IO error: lock ./data/anti_entropy/639406966332270026714112114313373821099470487552/LOCK: Resource temporarily unavailable"}} in hashtree:new_segment_store/2 line 499 in gen_server:init_it/6 line 3282013-07-12 06:33:36.150 [error] <0.968.0> gen_server <0.968.0> terminated with reason: no match of right hand value {error,{db_write,"IO error: ./data/anti_entropy/525227150915793236229449236757414210188850757632/000003.log: Cannot allocate memory"}} in hashtree:flush_buffer/1 line 3022013-07-12 06:33:36.158 [error] <0.968.0> CRASH REPORT Process <0.968.0> with 0 neighbours exited with reason: no match of right hand value {error,{db_write,"IO error: ./data/anti_entropy/525227150915793236229449236757414210188850757632/000003.log: Cannot allocate memory"}} in hashtree:flush_buffer/1 line 302 in gen_server:terminate/6 line 7472013-07-12 06:33:36.164 [error] <0.29013.0> CRASH REPORT Process <0.29013.0> with 0 neighbours exited with reason: no match of right hand value {error,{db_open,"IO error: lock ./data/anti_entropy/525227150915793236229449236757414210188850757632/LOCK: Resource temporarily unavailable"}} in hashtree:new_segment_store/2 line 499 in gen_server:init_it/6 line 3282013-07-12 06:33:36.261 [error] <0.1436.0> gen_server <0.1436.0> terminated with reason: no match of right hand value {error,{db_write,"IO error: ./data/anti_entropy/1187470080331358621040493926581979953470445191168/000003.log: Cannot allocate memory"}} in hashtree:flush_buffer/1 line 3022013-07-12 06:33:36.268 [error] <0.1436.0> CRASH REPORT Process <0.1436.0> with 0 neighbours exited with reason: no match of right hand value {error,{db_write,"IO error: ./data/anti_entropy/1187470080331358621040493926581979953470445191168/000003.log: Cannot allocate memory"}} in hashtree:flush_buffer/1 line 302 in gen_server:terminate/6 line 7472013-07-12 06:33:36.317 [error] <0.29134.0> CRASH REPORT Process <0.29134.0> with 0 neighbours exited with reason: no match of right hand value {error,{db_open,"IO error: lock ./data/anti_entropy/1187470080331358621040493926581979953470445191168/LOCK: Resource temporarily unavailable"}} in hashtree:new_segment_store/2 line 499 in gen_server:init_it/6 line 3282013-07-12 06:33:36.878 [error] <0.29259.0> CRASH REPORT Process <0.29259.0> with 0 neighbours exited with reason: no match of right hand value {error,{db_open,"IO error: ./data/anti_entropy/890602560248518965780370444936484965102833893376/000004.dbtmp: Cannot allocate memory"}} in hashtree:new_segment_store/2 line 499 in gen_server:init_it/6 line 3282013-07-12 06:33:37.024 [error] <0.29263.0> CRASH REPORT Process <0.29263.0> with 0 neighbours exited with reason: no match of right hand value {error,{db_open,"IO error: ./data/anti_entropy/159851741583067506678528028578343455274867621888/000004.dbtmp: Cannot allocate memory"}} in hashtree:new_segment_store/2 line 499 in gen_server:init_it/6 line 3282013-07-12 06:33:37.041 [error] <0.29260.0> CRASH REPORT Process <0.29260.0> with 0 neighbours exited with reason: no match of right hand value {error,{db_open,"IO error: ./data/anti_entropy/867766597165223607683437869425293042920709947392/000004.dbtmp: Cannot allocate memory"}} in hashtree:new_segment_store/2 line 499 in gen_server:init_it/6 line 3282013-07-12 06:33:37.095 [error] <0.29265.0> CRASH REPORT Process <0.29265.0> with 0 neighbours exited with reason: no match of right hand value {error,{db_open,"IO error: ./data/anti_entropy/639406966332270026714112114313373821099470487552/000004.dbtmp: Cannot allocate memory"}} in hashtree:new_segment_store/2 line 499 in gen_server:init_it/6 line 328
Exception I get is that:Loading workload...Starting test.java.net.SocketTimeoutException: Read timed out	at java.net.SocketInputStream.socketRead0(Native Method)	at java.net.SocketInputStream.read(SocketInputStream.java:150)	at java.net.SocketInputStream.read(SocketInputStream.java:121)	at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)	at java.io.BufferedInputStream.read(BufferedInputStream.java:254)	at java.io.DataInputStream.readInt(DataInputStream.java:387)	at com.basho.riak.pbc.RiakConnection.receive(RiakConnection.java:110)	at com.basho.riak.pbc.RiakClient.store(RiakClient.java:581)	at com.basho.riak.client.raw.pbc.PBClientAdapter.store(PBClientAdapter.java:177)	at com.basho.riak.client.raw.pbc.PBClientAdapter.store(PBClientAdapter.java:197)	at com.basho.riak.client.raw.ClusterClient.store(ClusterClient.java:139)	at com.yahoo.ycsb.db.RiakClient13.insert(RiakClient13.java:184)	at com.yahoo.ycsb.DBWrapper.insert(DBWrapper.java:148)	at com.yahoo.ycsb.workloads.CoreWorkload.doInsert(CoreWorkload.java:461)	at com.yahoo.ycsb.ClientThread.run(Client.java:269)Any ideas?
Regards, Veronika
Date: Fri, 12 Jul 2013 11:31:36 -0400
Subject: Re: Riak 1.3 YCSB Read Time Out
From: dparfitt at basho.com
To: ni4ca at hotmail.com
CC: riak-users at lists.basho.com

Hello Veronika -
  We're actively working on the YCSB project located at [0]. It should work fine with Riak 1.4. Since the existing implementation of YCSB is a work-in-progress, you can't trust any results it gives you until we get it merged upstream with the official YCSB repo. I'm not sure what's causing the "Read timed Out" exception, can you provide any logs?

Cheers -Dave
[0] https://github.com/basho-labs/YCSB





On Fri, Jul 12, 2013 at 11:23 AM, Nika Abramova <ni4ca at hotmail.com> wrote:




Thank you for reply. Of course I can try new version but will I be able to run YCSB for 1.3 over 1.4? This is my concern. What is the minimal RAM required for Riak to work correctly? I mean, what I am doing is inserting 100.000 records at once. 

Regards, Veronika

Date: Fri, 12 Jul 2013 16:07:23 +0100
From: guido.medina at temetra.com
To: riak-users at lists.basho.com

Subject: Re: Riak 1.3 YCSB Read Time Out


  
    
  
  
    Hi Veronika,

    

    Riak 1.4.0 was released yesterday, with the new streaming features
    nodes will stream keys to you instead of working with the whole
    result in memory, which will probably avoid the timeout.

    

    Though your RAM and specially using a VM could be a limiting factor,
    still worthy a try.

    Once your node is up type riak-admin diag and see if some parameters
    need to be adjusted.

    

    For more information on tuning:
    http://docs.basho.com/riak/latest/cookbooks/Linux-Performance-Tuning/

    

    HTH,

    

    Guido.

    

    On 12/07/13 14:58, Nika Abramova wrote:

    
    
      
      Greetings,
        I am currently testing different NoSQL databases and now I
          was starting Riak. I downloaded and installed Riak 1.3 and was
          executing YCSB over it. But after some time (40 sec) of
          loading data, I got "Read timed Out" exception. 
        How can I solve it? I am working locally, on same machine
          so my connection is to localhost. Is that lack of RAM that
          causing that? Since I am using VM and I only have 2GB RAM for
          it. Or it is something else I can configure?
        

        
        Regards, Veronika
      
      

      
      

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